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Last Updated: February 25, 2025
If you're like the average American, more than half of your energy bill (55%, according to the Department of Energy) goes toward heating and cooling your home. It's important that the cooling and heating systems in your Clemson home are functioning properly, so you can avoid spending more than you need to.
A top HVAC contractor can get your system into its best shape ever, saving you money while keeping your home comfortable. That's why we've assembled this guide to the top HVAC companies in Clemson.

Our Rating
User Rating
Clear pricing policy
Reliable customer support
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Informative resources
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Services Offered

Our Rating
User Rating
Informative resources
Reliable customer support
Free quotes
Prompt service delivery
Clear pricing policy
Services Offered

Our Rating
User Rating
Free quotes
Services Offered

Our Rating
User Rating
Prompt service delivery
Informative resources
Clear pricing policy
Free quotes
Reliable customer support
Services Offered

Our Rating
User Rating
Free quotes
Clear pricing policy
Informative resources
Services Offered

Our Rating
User Rating
Reliable customer support
Clear pricing policy
Free quotes
Informative resources
Services Offered

Our Rating
User Rating
Reliable customer support
Free quotes
Clear pricing policy
Informative resources
Services Offered

Our Rating
User Rating
Informative resources
Reliable customer support
Free quotes
Clear pricing policy
Services Offered

Our Rating
User Rating
Free quotes
Informative resources
Clear pricing policy
Reliable customer support
Services Offered

Our Rating
User Rating
Clear pricing policy
Free quotes
Reliable customer support
Prompt service delivery
Services Offered
Today's Homeowner looks at dozens of datapoints on hvac companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:
If your HVAC system is faulty or getting near the end of its lifespan, it likely needs servicing or replacement from an HVAC company. Watch for these signs your system needs service:
If you notice any of these HVAC issues, we recommend having a technician inspect your system. A local professional can identify problems and decide whether repairing or getting a new HVAC unit is the best solution.
What you spend on HVAC installation or maintenance depends on your system style. Common HVAC unit styles include the following:
HVAC maintenance prices vary based on the specific services required. HVAC systems can be complicated and potentially require a number of services. Price ranges for typical jobs are as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $1,741-$4,439 | |
| Hybrid Split | $3,529-$6,501 | |
| Heat Pump | $2,732-$27,841 | |
| Packaged Heating and Air | $229-$381 |
It's important to take care of HVAC repairs and replacements in a timely manner, but it can also be expensive. Thankfully, there are steps you can take to reduce wear and tear on your HVAC.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $57-$152 | |
| Condensor Cleaning | $1,143-$3,430 | |
| Thermostat Repair | $76-$191 | |
| Ductwork Cleaning | $366-$915 |
Knowing what to look for in an HVAC company is crucial for a successful project. Look for an experienced, licensed contractor that can offer you peace of mind and ensure your system provides reliable heating and air conditioning for your home.
Contact at least three HVAC companies for quotes. Explain the issues and have specialists visit to inspect your system if possible. Compare the providers' explanations, solutions, estimated costs, warranties, and timeframes. Avoid companies that pressure you or demand payment upfront.
Look for an HVAC company that employs qualified technicians who have the necessary training and licenses. HVAC contractors in all states need to obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is mandatory for all contractors who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." Contractors must pass an exam (the type of exam depends on what kind of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled on a state-by-state basis.
HVAC contractors in South Carolina are required to be licensed as mechanical contractors via the South Carolina Department of Labor, Licensing and Regulation Contractor's Licensing Board. This license can have multiple specialities, such as Electrical, Refrigeration, Air Conditioning, Heating, or Plumbing, depending on what's needed for a specific project. Contractors must have one year of work experience and pass an exam to be licensed. Individual cities or counties may have additional requirements. Also check a company's reviews and complaints on sites such as the Better Business Bureau (BBB), Yelp, and Google Reviews. Pick a company with great feedback and stories of satisfied customers.
It’s important to know what the work process will look like. For HVAC repairs, the company should list the exact parts that need replacement and why. Get confirmation that your technician will clean and test your system afterward to guarantee everything is working correctly. When replacing your HVAC, have the contractor explain the new estimated installation time, model, brand, energy efficiency, and features. Before signing a contract, be sure you understand the process your provider will use to size the new HVAC system appropriately for your home and what the price will be.
Reliable HVAC companies offer warranties on service and equipment installations. The more complete the coverage, the better. Compare warranty details between companies and pick the one that offers the most comprehensive protection for a fair price.
Always get quotes for HVAC service in writing before committing to a provider. A comprehensive quote should cover both materials and labor. Make sure you agree to all terms before signing a contract.
You should have your HVAC system inspected about twice annually. At the time of the inspection, your technician will tell you if any services are required. You should also schedule an inspection if you notice new issues such as unusual smells, leaks, or strange noises. If your system has ductwork, it should be inspected every few years.
Generally, it's smart to schedule inspections in the spring and fall, as technicians tend to be less busy at these times. This also helps get your system ready for the summer and winter, when it typically sees the most use.
You can save energy during the summer by making it easier for your HVAC system to keep your home cool. Set your thermostat as close to the outside temperature as is comfortable, and try to avoid making drastic changes in temperature all at once. Keep your roof in good shape and seal any door or window leaks to avoid letting cool air escape. Similarly, make sure your attic is well ventilated to avoid trapping excess heat in your home.
Generally, whole-system HVAC installation or replacement takes one to three days. Installing or replacing an air conditioning unit or a furnace can take as little as half a day or as much as two days. The exact amount of time will be based on factors like the size of your home, how easily accessible different areas are, and whether your technician discovers any problems.
For a 2,000-square-foot home, try to purchase a furnace that's between 50,000 and 80,000 BTUs (British thermal units). In Clemson, you may be able to make do with a furnace on the lower end of this range.
For a 2,000-square-foot home, you'll also want an air conditioning unit with around 2.5 to 5 tons of capacity. In Clemson, you'll likely need a unit on the higher end of this range. In general, if your home is over 1,000 square feet, central air will be more effective than window air conditioning units.
There are a number of ways you can make your HVAC system more energy-efficient:
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